Is it very possible to pass the CCNA by using self-study material....There are two great ccna CBT products, one from CBTNuggets and the other from TrainSignal. Also, Cisco Press has some great publications for the exam. They key is to get hands on practice....whether that means buying and setting up your own lab, or renting some rack space...doesn't matter, as long as you get the practice. You can rent rack space from www.thebryantadvantage.com and

There are those that have successfully obtained the CCNA certification without attending a formal class. There are various ways that individuals have gone about completing this objective (years of experience in the field, use of books with router/switch simulators, really dog on smart...etc). It really depends on you and your ability to aborb this complex information.

Below is the link to the 'IT Certification and Career Paths' Introduction page. There you will find links to the various certifications with associated information to assist you with getting a better understanding of what each entails and some direction on what resources you may need to obtain them.

It is possible? Yes, it is. However, things like the classroom, labs and hands on experience will help increase your chances of passing. Cisco Exams are no small task. Even very experienced engineers have failed Cisco exams.